1213804232 has 8 divisors (see below), whose sum is σ = 2275882950. Its totient is φ = 606902112.

The previous prime is 1213804223. The next prime is 1213804247. The reversal of 1213804232 is 2324083121.

It can be written as a sum of positive squares in only one way, i.e., 1015951876 + 197852356 = 31874^2 + 14066^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1213804232² = 2946641427242219648, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75862757 + ... + 75862772.

Almost surely, 2^1213804232 is an apocalyptic number.

It is an amenable number.

1213804232 is a deficient number, since it is larger than the sum of its proper divisors (1062078718).

1213804232 is a wasteful number, since it uses less digits than its factorization.

1213804232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151725535 (or 151725531 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1213804232 is about 34839.6933396378. The cubic root of 1213804232 is about 1066.7178172520.

Adding to 1213804232 its reverse (2324083121), we get a palindrome (3537887353).

The spelling of 1213804232 in words is "one billion, two hundred thirteen million, eight hundred four thousand, two hundred thirty-two".